Earlier quoted context omitted.
Tell me more!
Yeah sure, my process to learn was literally I went down to a local computer store, I bought a cheap desktop computer and 6 cheap hard drives, an HBA, a RAID controller, a bunch of cables, went back to the office and installed Ubuntu Server onto it and practiced several "skills", like how to setup automated backups using rsync, how to physically install these components, how to install mdadm for software RAID etc...…
And not a single mention of backups.
Good luck with that.